Dune Core Modules (2.6.0)
bcrsmatrix.hh
Go to the documentation of this file.
167 DUNE_THROW(BCRSMatrixError,"You can only create an ImplicitBuilder for a matrix in implicit build mode");
169 DUNE_THROW(BCRSMatrixError,"You can only create an ImplicitBuilder for a matrix with set size that has not been compressed() yet");
187 ImplicitMatrixBuilder(Matrix& m, size_type rows, size_type cols, size_type avg_cols_per_row, double overflow_fraction)
191 DUNE_THROW(BCRSMatrixError,"You can only set up a matrix for this ImplicitBuilder if it has no memory allocated yet");
440 };
466 };
503 };
512 DUNE_THROW(BCRSMatrixError,"You cannot use operator[] in implicit build mode before calling compress()");
524 DUNE_THROW(BCRSMatrixError,"You cannot use operator[] in implicit build mode before calling compress()");
770 DUNE_THROW(InvalidStateException,"BCRSMatrix can only be copy-constructed when source matrix is completely empty (size not set) or fully built)");
799 if (ready == building && (build_mode == unknown || build_mode == random || build_mode == row_wise) && (bm == row_wise || bm == random))
802 DUNE_THROW(InvalidStateException, "Matrix structure cannot be changed at this stage anymore (ready == "<<ready<<").");
828 DUNE_THROW(Dune::BCRSMatrixError,"number of non-zeroes may not be set in implicit mode, use setImplicitBuildModeParameters() instead");
859 DUNE_THROW(InvalidStateException,"You cannot modify build mode parameters at this stage anymore");
875 if (!((ready == notAllocated || ready == built) && (Mat.ready == notAllocated || Mat.ready == built)))
876 DUNE_THROW(InvalidStateException,"BCRSMatrix can only be copied when both target and source are empty or fully built)");
929 DUNE_THROW(BCRSMatrixError,"creation only allowed if row wise allocation was requested in the constructor");
1225 dwarn << "WARNING: size of row "<< i.index()<<" is "<<j.offset()<<". But was specified as being "<< (*i).end().offset()
1226 <<". This means you are wasting valuable space and creating additional cache misses!"<<std::endl;
1328 DUNE_THROW(InvalidStateException,"You may only call compress() at the end of the 'building' stage");
1447 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1475 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1508 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1530 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1555 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1575 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1597 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1616 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1635 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1654 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1669 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1705 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1724 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1743 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1762 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1783 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1810 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1830 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1850 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1873 DUNE_THROW(BCRSMatrixError,"You can only call arithmetic operations on fully built BCRSMatrix instances");
1910 nnz_ = std::accumulate( begin(), end(), size_type( 0 ), [] ( size_type s, const row_type &row ) { return s+row.getsize(); } );
1955 size_type allocationSize_; //allocated size of a and j arrays, except in implicit mode: nnz_==allocationsSize_
2141 void allocate(size_type rows, size_type columns, size_type allocationSize, bool allocateRows, bool allocate_data)
2153 DUNE_THROW(InvalidStateException,"Rows have already been allocated, cannot allocate a second time");
2200 DUNE_THROW(InvalidStateException,"implicit_allocate() may only be called in implicit build mode");
2206 DUNE_THROW(InvalidStateException,"You have to set the implicit build mode parameters before starting to build the matrix");
This file implements a vector space as a tensor product of a given vector space. The number of compon...
Iterator class for sequential creation of blocks
Definition: bcrsmatrix.hh:916
bool operator==(const CreateIterator &it) const
equality
Definition: bcrsmatrix.hh:1011
CreateIterator & operator++()
prefix increment
Definition: bcrsmatrix.hh:936
size_type index() const
The number of the row that the iterator currently points to.
Definition: bcrsmatrix.hh:1017
bool operator!=(const CreateIterator &it) const
inequality
Definition: bcrsmatrix.hh:1005
CreateIterator(BCRSMatrix &_Mat, size_type _i)
constructor
Definition: bcrsmatrix.hh:919
void insert(size_type j)
put column index in row
Definition: bcrsmatrix.hh:1023
bool contains(size_type j)
return true if column index is in row
Definition: bcrsmatrix.hh:1029
size_type size() const
Get the current row size.
Definition: bcrsmatrix.hh:1038
Class used by shared_ptr to deallocate memory using the proper allocator.
Definition: bcrsmatrix.hh:2112
RealRowIterator()
empty constructor, use with care!
Definition: bcrsmatrix.hh:555
bool equals(const RealRowIterator< ValueType > &other) const
equality
Definition: bcrsmatrix.hh:583
std::remove_const< T >::type ValueType
The unqualified value type.
Definition: bcrsmatrix.hh:542
bool equals(const RealRowIterator< const ValueType > &other) const
equality
Definition: bcrsmatrix.hh:590
RealRowIterator(row_type *_p, size_type _i)
constructor
Definition: bcrsmatrix.hh:550
size_type index() const
return index
Definition: bcrsmatrix.hh:565
bool exists(size_type i, size_type j) const
return true if (i,j) is in pattern
Definition: bcrsmatrix.hh:1929
BuildStage buildStage() const
The current build stage of the matrix.
Definition: bcrsmatrix.hh:1915
friend class CreateIterator
allow CreateIterator to access internal data
Definition: bcrsmatrix.hh:1053
void copyWindowStructure(const BCRSMatrix &Mat)
Copy the window structure from another matrix.
Definition: bcrsmatrix.hh:2044
B & entry(size_type row, size_type col)
Returns reference to entry (row,col) of the matrix.
Definition: bcrsmatrix.hh:1255
void usmhv(const field_type &alpha, const X &x, Y &y) const
y += alpha A^H x
Definition: bcrsmatrix.hh:1758
RealRowIterator< const row_type > const_iterator
The const iterator over the matrix rows.
Definition: bcrsmatrix.hh:666
BCRSMatrix(size_type _n, size_type _m, size_type _avg, double _overflowsize, BuildMode bm)
construct matrix with a known average number of entries per row
Definition: bcrsmatrix.hh:743
void allocate(size_type rows, size_type columns, size_type allocationSize, bool allocateRows, bool allocate_data)
Allocate memory for the matrix structure.
Definition: bcrsmatrix.hh:2141
B::field_type field_type
export the type representing the field
Definition: bcrsmatrix.hh:445
BCRSMatrix & axpy(field_type alpha, const BCRSMatrix &b)
Add the scaled entries of another matrix to this one.
Definition: bcrsmatrix.hh:1551
FieldTraits< ft >::real_type infinity_norm_real() const
simplified infinity norm (uses Manhattan norm for complex values)
Definition: bcrsmatrix.hh:1828
void deallocate(bool deallocateRows=true)
deallocate memory of the matrix.
Definition: bcrsmatrix.hh:2061
Iterator RowIterator
rename the iterators for easier access
Definition: bcrsmatrix.hh:660
row_type & operator[](size_type i)
random access to the rows
Definition: bcrsmatrix.hh:508
void endrowsizes()
indicate that size of all rows is defined
Definition: bcrsmatrix.hh:1108
void incrementrowsize(size_type i, size_type s=1)
increment size of row i by s (1 by default)
Definition: bcrsmatrix.hh:1097
size_type nonzeroes() const
number of blocks that are stored (the number of blocks that possibly are nonzero)
Definition: bcrsmatrix.hh:1906
ConstIterator ConstRowIterator
rename the const row iterator for easier access
Definition: bcrsmatrix.hh:697
void setrowsize(size_type i, size_type s)
Set number of indices in row i to s.
Definition: bcrsmatrix.hh:1076
BCRSMatrix & operator*=(const field_type &k)
vector space multiplication with scalar
Definition: bcrsmatrix.hh:1443
RealRowIterator< row_type > iterator
The iterator over the (mutable matrix rows.
Definition: bcrsmatrix.hh:630
void usmtv(const field_type &alpha, const X &x, Y &y) const
y += alpha A^T x
Definition: bcrsmatrix.hh:1701
@ implicit
Build entries randomly with an educated guess for the number of entries per row.
Definition: bcrsmatrix.hh:498
BCRSMatrix(size_type _n, size_type _m, size_type _nnz, BuildMode bm)
matrix with known number of nonzeroes
Definition: bcrsmatrix.hh:715
::Dune::CompressionStatistics< size_type > CompressionStatistics
The type for the statistics object returned by compress()
Definition: bcrsmatrix.hh:460
BCRSMatrix & operator-=(const BCRSMatrix &b)
Subtract the entries of another matrix from this one.
Definition: bcrsmatrix.hh:1526
BCRSMatrix(const BCRSMatrix &Mat)
copy constructor
Definition: bcrsmatrix.hh:764
Iterator end()
Get iterator to one beyond last row.
Definition: bcrsmatrix.hh:640
void setIndices(size_type row, It begin, It end)
Set all column indices for row from the given iterator range.
Definition: bcrsmatrix.hh:1193
void addindex(size_type row, size_type col)
add index (row,col) to the matrix
Definition: bcrsmatrix.hh:1150
row_type::Iterator ColIterator
Iterator for the entries of each row.
Definition: bcrsmatrix.hh:663
FieldTraits< field_type >::real_type frobenius_norm() const
frobenius norm: sqrt(sum over squared values of entries)
Definition: bcrsmatrix.hh:1800
A::size_type size_type
The type for the index access and the size.
Definition: bcrsmatrix.hh:457
BCRSMatrix & operator/=(const field_type &k)
vector space division by scalar
Definition: bcrsmatrix.hh:1471
BCRSMatrix & operator+=(const BCRSMatrix &b)
Add the entries of another matrix to this one.
Definition: bcrsmatrix.hh:1504
@ blocklevel
The number of blocklevels the matrix contains.
Definition: bcrsmatrix.hh:465
CreateIterator createend()
get create iterator pointing to one after the last block
Definition: bcrsmatrix.hh:1062
FieldTraits< field_type >::real_type frobenius_norm2() const
square of frobenius norm, need for block recursion
Definition: bcrsmatrix.hh:1779
row_type::ConstIterator ConstColIterator
Const iterator to the entries of a row.
Definition: bcrsmatrix.hh:700
void usmv(F &&alpha, const X &x, Y &y) const
y += alpha A x
Definition: bcrsmatrix.hh:1631
size_type getrowsize(size_type i) const
get current number of indices in row i
Definition: bcrsmatrix.hh:1087
size_type M() const
number of columns (counted in blocks)
Definition: bcrsmatrix.hh:1900
Imp::CompressedBlockVectorWindow< B, A > row_type
implement row_type with compressed vector
Definition: bcrsmatrix.hh:454
CreateIterator createbegin()
get initial create iterator
Definition: bcrsmatrix.hh:1056
@ rowSizesBuilt
The row sizes of the matrix are known.
Definition: bcrsmatrix.hh:437
@ notbuilt
Matrix is not built at all, no memory has been allocated, build mode and size can still be set.
Definition: bcrsmatrix.hh:428
@ notAllocated
Matrix is not built at all, no memory has been allocated, build mode and size can still be set.
Definition: bcrsmatrix.hh:430
@ building
Matrix is currently being built, some memory has been allocated, build mode and size are fixed.
Definition: bcrsmatrix.hh:432
BuildMode buildMode() const
The currently selected build mode of the matrix.
Definition: bcrsmatrix.hh:1921
FieldTraits< ft >::real_type infinity_norm() const
infinity norm (row sum norm, how to generalize for blocks?)
Definition: bcrsmatrix.hh:1808
B block_type
export the type representing the components
Definition: bcrsmatrix.hh:448
void implicit_allocate(size_type _n, size_type _m)
organizes allocation implicit mode calculates correct array size to be allocated and sets the the win...
Definition: bcrsmatrix.hh:2197
BCRSMatrix(size_type _n, size_type _m, BuildMode bm)
matrix with unknown number of nonzeroes
Definition: bcrsmatrix.hh:724
void endindices()
indicate that all indices are defined, check consistency
Definition: bcrsmatrix.hh:1207
CompressionStatistics compress()
Finishes the buildstage in implicit mode.
Definition: bcrsmatrix.hh:1319
void setDataPointers()
Set data pointers for all rows.
Definition: bcrsmatrix.hh:2025
size_type N() const
number of rows (counted in blocks)
Definition: bcrsmatrix.hh:1894
void setBuildMode(BuildMode bm)
Sets the build mode of the matrix.
Definition: bcrsmatrix.hh:792
void setSize(size_type rows, size_type columns, size_type nnz=0)
Set the size of the matrix.
Definition: bcrsmatrix.hh:820
BCRSMatrix & operator=(const BCRSMatrix &Mat)
assignment
Definition: bcrsmatrix.hh:870
void setColumnPointers(ConstRowIterator row)
Copy row sizes from iterator range starting at row and set column index pointers for all rows.
Definition: bcrsmatrix.hh:1999
ConstIterator end() const
Get const iterator to one beyond last row.
Definition: bcrsmatrix.hh:677
ConstIterator begin() const
Get const iterator to first row.
Definition: bcrsmatrix.hh:671
void setImplicitBuildModeParameters(size_type _avg, double _overflow)
Set parameters needed for creation in implicit build mode.
Definition: bcrsmatrix.hh:848
A allocator_type
export the allocator type
Definition: bcrsmatrix.hh:451
Proxy row object for entry access.
Definition: bcrsmatrix.hh:130
block_type & operator[](size_type j) const
Returns entry in column j.
Definition: bcrsmatrix.hh:135
A wrapper for uniform access to the BCRSMatrix during and after the build stage in implicit build mod...
Definition: bcrsmatrix.hh:110
Matrix::block_type block_type
The block_type of the underlying matrix.
Definition: bcrsmatrix.hh:118
ImplicitMatrixBuilder(Matrix &m)
Creates an ImplicitMatrixBuilder for matrix m.
Definition: bcrsmatrix.hh:163
ImplicitMatrixBuilder(Matrix &m, size_type rows, size_type cols, size_type avg_cols_per_row, double overflow_fraction)
Sets up matrix m for implicit construction using the given parameters and creates an ImplicitBmatrixu...
Definition: bcrsmatrix.hh:187
size_type M() const
The number of columns in the matrix.
Definition: bcrsmatrix.hh:210
Matrix::size_type size_type
The size_type of the underlying matrix.
Definition: bcrsmatrix.hh:121
row_object operator[](size_type i) const
Returns a proxy for entries in row i.
Definition: bcrsmatrix.hh:198
size_type N() const
The number of rows in the matrix.
Definition: bcrsmatrix.hh:204
The overflow error used during implicit BCRSMatrix construction was exhausted.
Definition: istlexception.hh:34
Default exception if a function was called while the object is not in a valid state for that function...
Definition: exceptions.hh:279
T block_type
Export the type representing the components.
Definition: matrix.hh:562
Base class for stl conformant forward iterators.
Definition: iteratorfacades.hh:433
Type traits to determine the type of reals (when working with complex numbers)
T accumulate(Range &&range, T value, F &&f)
Accumulate values.
Definition: hybridutilities.hh:331
constexpr decltype(auto) elementAt(Container &&c, Index &&i)
Get element at given position from container.
Definition: hybridutilities.hh:133
DWarnType dwarn(std::cerr)
Stream for warnings indicating problems.
Definition: stdstreams.hh:159
This file implements iterator facade classes for writing stl conformant iterators.
Some handy generic functions for ISTL matrices.
Standard Dune debug streams.
Statistics about compression achieved in implicit mode.
Definition: bcrsmatrix.hh:81
size_type overflow_total
total number of elements written to the overflow area during construction.
Definition: bcrsmatrix.hh:87
size_type maximum
maximum number of non-zeroes per row.
Definition: bcrsmatrix.hh:85
double avg
average number of non-zeroes per row.
Definition: bcrsmatrix.hh:83
double mem_ratio
fraction of wasted memory resulting from non-used overflow area.
Definition: bcrsmatrix.hh:92
Traits for type conversions and type information.
|
Legal Statements / Impressum |
Hosted by TU Dresden |
generated with Hugo v0.111.3
(Nov 13, 23:29, 2024)